The pitch at the Joie Stadium was half-shadowed by four o’clock, the light falling across the centre circle in that particular way it does in Manchester when the sky can’t decide between cloud and sun. It was the kind of afternoon that felt like it had been building for a long time. Ten years, to be precise.

Manchester City are WSL champions.T2, Sky Sports

The sentence is simple. The path to it was not. Chelsea’s four-year stranglehold on the Women’s Super League title, a dynasty built on the quiet authority of Emma Hayes and inherited, without a flinch, by Sonia Bompastor, ended on Saturday afternoon in east Manchester. City needed a point. They took three. And in doing so they did not merely win a league; they redrawn the map of women’s football in this country, at least for the time being.

Chelsea, for their part, will point to the margins. They will be right to. The table, when the final whistle blew, showed a gap of two points. One result either way across thirty matches and this is a different story, a different headline, a different photograph on tomorrow’s back pages. Bompastor’s side did not collapse. They were not overrun. They were simply beaten, narrowly, by a team that wanted it as much as they did and found, in the final weeks of the season, a gear they had not previously shown they possessed.

Gareth Taylor’s team have been coming for two years. The recruitment has been smart, targeted, quietly aggressive. Bunny Shaw’s goals are the headline; Khadija Shaw does not miss the chances that other strikers miss, and she converts the ones that other strikers would not even attempt. But the architecture of this City side is in the midfield, where Yui Hasegawa has played with a composure that would make her comfortable in any league in the world, and in defence, where Alex Greenwood has marshalled a back line that conceded fewer goals than anyone else in the division.T2, Sky Sports

What changed this season, though, was something harder to measure. City, in previous campaigns, have been good enough to challenge and not quite good enough to finish. They have run Chelsea close. They have not beaten them when it mattered. The question, heading into this spring, was whether Taylor’s squad had the nerve for a title race that would almost certainly go to the final day.

They answered it. Not with a flourish, not with a statement performance, but with the kind of grinding, game-by-game accumulation that wins leagues in any country, in any era. Eight wins in their last nine matches. Clean sheets when they needed them. Goals from set pieces and transitions and moments of individual quality. It was not always pretty. It was always enough.

Chelsea will look at the defeat that hurt most and find it was not to City at all. It was the draw at home to Arsenal in March, the one where they led twice and could not hold. It was the afternoon at Kingsmeadow when the back line, so reliable for so long, lost concentration in the 87th minute and allowed Alessia Russo to steal a point. Those are the moments that define title races. Those are the moments that, in hindsight, feel larger than they did at the time.

Bompastor, in her first season in English football, has done nothing wrong. She inherited a squad that Hayes had built and she trusted it. She rotated when she needed to and did not when she did not. Her Chelsea side won the FA Cup. They reached the Champions League semi-finals. They will, in all likelihood, be stronger next season, because that is what Chelsea do: they absorb disappointment and they return.

But this is City’s year. And the significance of it extends beyond the trophy, beyond the photographs, beyond the open-top bus parade that will wind through Manchester in the coming days. For a decade, the WSL has been a conversation between two clubs, Arsenal and Chelsea, with others hovering at the edges. City’s title, and the manner of it, suggests the conversation is widening.

The investment has been there for some time. The infrastructure, the training facilities, the academy pipeline; all of it has been building towards this. What was missing was the proof of concept, the evidence that City could sustain a challenge across a full season against a side as relentless as Chelsea. They have now provided it.

Taylor, on the touchline in the final minutes, stood with his arms folded and his face unreadable. He did not celebrate until the final whistle, and even then his celebration was measured, a handshake here, an embrace there. He knows, as every manager knows, that winning a title is the easy part. Defending it is the harder ask.

The Joie Stadium, when the whistle went, erupted in a way that women’s football in Manchester has not heard for ten years. Children on parents’ shoulders. Scarves held aloft. The sound that comes when patience is finally rewarded. The players formed a huddle near the centre circle. Bunny Shaw was in the middle of it. Yui Hasegawa, who does not show emotion easily, was crying.

Chelsea’s players, across the pitch, stood in a line and applauded their own supporters. It was a gracious gesture. It was also the gesture of a team that knows it will be back.

Next season, then. The WSL enters it with three genuine title contenders, perhaps four, which is new, which is good, which is the point. Manchester City have proven that Chelsea can be beaten. The question now is whether anyone else has the nerve to try.